Computing-scale.



J. S. BRADLEY.

COMPUTING SCALE.

APPLICATION FILED JULY 25.1908.

Pitenbed Jan. 12, 1909.

I HIIIHIHHIH "#fillllllllll UIIIIIIII HI I vwuatoa dley m B m m 6m 6 MUNITED STA'llEEi PATENT OFFICE.

JOHN STURGUS BRADLEY, OF NEW (JONCORD, OHIO.

COMPUTING-SQALE.

Specification of Letters Patent.

Application filed July 25, 1908.

Patented Jan. 12. 1909.

Serial No. 445,387.

To all whom it may concern:

Be it known that I, Jonx S'rpnons Bu mmir. a citizen of the UnitedStates, residing at New Concord, in the couhty of Muskingum and State ofOhio, have invented certain new and useful Improvements in(ompnting-Scales, of which the following is a specification.

My invention relates to the improvement and hasparticnlar relaz'nent osuspended or ditions These objects I accomplish in the nannerillustratedin the accompanying drawing, in which Figure l is a View partlyjnsection and partly in elevation of my improved scale construction. Fig.2 is a sectional view on linenm of Fig; lal ig. .3 is an enlargedsectional view on line of Fig. i. Fig. 4 is an enlarged detail viewillustrating the p votal support ol the inner end of one of the beamswhich I emplo in the manner hereinafter described, and. Fig. 5 is adetail plan view of the rear portion of one of the s ale beams.

Similar numerals refer to similar parts throughout the several views,

1 represents a casing or exterior frame of suitable form and which isprovided in its central portion and upper side with means for suspendingthe same, which may be. in

the nature of an opening su h as is shown at 2. Rising from the floor orupper side of the base of the casing 1 near each end of the latter is afixed Slll)I)()llLlllg standard 3, the upper end of each of which isprovided with crossed bifurcations or recesses, which bifurcations areindicated respectively at 3* and 3 in Fi". 5 of the drawing. Througheach of the bifurcations 3* extends the lower and outer portion of ascale beam 4, the latter being rovided on opposite sides with knifeblade caring projections 53, the lower edges of which bear in thecenters of V- shaped recesses formed in the upper sides of bearingmembers 6 which are of agate or other exceedingly hard material andwhich are mounted in the bifurcations 3 on oppo site sides of the beam.Q

Each of the beams at has dependingtherefrom adja ent to its standard 3.a hanger 7 the upper bifurcated portion of each of the hangersembracing. opposite sides of the beam and being supported 7 therefromthrough the medium of knife blade bearing projections S of the beam. theupper edges of which engage bearing members 9 mounted in oppositelylocated recesses or openings in the upper portion of the hanger. Thelower I ends of the hangers T are pivotally connected as indicated at Twith the ends of a horizontal supporting ban 10, the latter beingparallel with the base of the casing 1 and'haying a central dependinghook 10' which pro ects through a central bottom opening .1 1n thecasing 1., Wit h the hook 109 is adapted to be engaged the bail ll of asuitable form of weighing tray 11 which is thus suspended beneath thecasing l.

Above the inner end portion of each of the beams 4 I support inconnection with the frame or raising 1', a bar '12 and from said barsproject inwardly or toward each other. hearing or suspension brackets13. Each of the bracket projectionsllil is bifurcated to receive aweight carrying head 14', which is of. a substantially cam shape. andthe upper side of which is curved or rounded. as

shown, said curved or rounded ortion being extended inwardly from the 0dof said head Each of the heads 14 has projecting therefrom, oppositelylocated knife blade A l'icarings 15, the lower edges of which aresupported in the centers of the V-shapcd rcccsses of bearing members 16which are sup ported in the recessed or bifurcated sides of the bracket13. t 4

\Yith the underside of each of the heads 14, is rigidly connected adownward] extending rod 14- which carries on its ower end a bifurcatedor slotted Weight 1.7, the latter embracing loosely opposite sides of abeam 4. With the upper curved side of each of the heads 14 is connecteda flexible metallic strap 18, which running over the curved surface ofsaid head, depends vertically therefrom, as shown, and is connected atits lower end with a hanger 19. As indicated in the drawin each of thesehangers 19 comprises an e ongated vertically disposed a V-shaped bearingrecess in its upper side and the lower opening 21 having a correspondingalthough inverted hearing in its lower portion. As shown, the inner andsmaller end portions of the beams l extend through the hanger openings21, said beams being provided with bearing projections 22 which engagethe bearing recesses in the lower portions of said openin 's.

Between the inner ends of the beams 4 and below the latter, I suitablysupport from the framework or casing; a vertically disposed dash pot orcylinder 23 which is of the usual construction employed in thecushioning of the movement of a piston contained therein. 24 representsthe dash pot piston, the upper end of which is connected with the lowerend of an Above the dash pot the bar 25 is provided with an opening 25*through which passes a horizontal balance rod 26, the latter beingformed with a central knife edge bearing projection, which bears in thebottom of the opening 25. Each end of the rod 26 has on its upper side asimilar bearing projection, which contacts with the upper side of theopenim 20 in the corresponding hanger 19 through which the rod 26projects. Above the rod 26, the bar 25 is bent rearwardly and thenceupwardly, its toothed surface engaging a toothed se ment 2? carried by ahOIlzontally dis ose chart cylinder 28 which is ivoted in t is upperportion of the casing 1.

etween frame members 29. The chart cylinder 28 is of the usual or wellknown construction and is adapted to have printed thereon weight andprice indications which are visible as usual through an opening 30 insaid cylinder. In order to properly guide the bar 25 in its verticalreciprocating movement, I have provided a pair of guide pins 31 whichextend on opposite sides of the lower portionof the bar 25 and whichprojcct from the casing 1.

In operation, it will be understood that when a weight is placed on thetray 11, the downward pull on the bar 10 will result in a correspondingand uniform downward swinging movement of the inner ends of the beams 4-which movements will result in corresponding downward movements of thehangers 19 and supporting straps 18, with upwardly extending rack bar523;

the result that the weights 1'? will be swung upward and outward awayfrom each other. The downward movements of the hangers 19 will alsoresult in a downward movement of the rod 20 and a corresponding movementof the rack bar 25, thereby resulting in a partial rotation of thecylinder 28 and bringing to view proper chart indications through theopenin r 30.

It m l readily be understood that although the weight applied to thetray, may be at; one side thereof, the construction and connections ofthe various parts of my device will insure the distribution of thedownward pullmg action on both the scale beams and the parts connectedtherewith, equally. It; will thus he understood that; a sensitive andaccurateweighing mechanism is provided and that the means employed aresimple and positive in their actions.

What I claim, is:

1 In suspension scales, the combination with a framework, two op osipivoted scale beams, a hanger depen ing rom each of said beams, a barconnecting said hangers, and a weighing tray supported centrally fromsaid bar, of-an indicator or chart 0pcrating bar'and connections betweensaid 0 era ting bar and said scale beams wherebyt e movement of thelatter imparts a predeter- Lnined degree of movement to said operating2. In suspension scales, the combination with a framework, 21 pair catedpivotedscale beams within said frame} work, a bar jointcdly connectingthe outer portions of said scale beams and a weighing tray suspendedcentrally from said bar, of a pair of pivoted weight carrying headsabove the beams, weights depending therefrom, straps connecting saidweight carrying heads with the inner ends of said beams, a connection'between said straps, and a scale chart operating bar connected with saidstrap connection.

In testimony whereof I atlix my signature in presence of two witnesses.

J OHN STURGUS BRADLEY.

IVitnesses: t

L. CARL SToUoIrroN, C. C. SHEPHERD.

